All-Dielectric Nanostructures with a Thermoresponsible Dynamic Polymer Shell

Anna A Nikitina; Valentin A Milichko; Alexander S Novikov; Artem O Larin; Proloy Nandi; Utkur Mirsaidov; Daria V Andreeva; Mikhail V Rybin; Yuri S Kivshar; Ekaterina V Skorb

doi:10.1002/anie.202101188

All-Dielectric Nanostructures with a Thermoresponsible Dynamic Polymer Shell

Angew Chem Int Ed Engl. 2021 Jun 1;60(23):12737-12741. doi: 10.1002/anie.202101188. Epub 2021 May 5.

Authors

Anna A Nikitina¹, Valentin A Milichko^{1

2}, Alexander S Novikov³, Artem O Larin¹, Proloy Nandi⁴, Utkur Mirsaidov^{4

5}, Daria V Andreeva⁵, Mikhail V Rybin^{1

6}, Yuri S Kivshar^{1

7}, Ekaterina V Skorb¹

Affiliations

¹ ITMO University, 9 Lomonosova street, 191002, St. Petersburg, Russia.
² Université de Lorraine, Institut Jean Lamour, UMR CNRS 7198, 54011, Nancy, France.
³ Institute of Chemistry, Saint Petersburg State University, Universitetskaya Nab., 7/9, 199034, St. Petersburg, Russia.
⁴ Centre for BioImaging Sciences, Department of Biological Sciences, National University of Singapore, Singapore.
⁵ Department of Materials Science and Engineering, National University of Singapore, Singapore.
⁶ Ioffe Institute, 194021, St Petersburg, Russia.
⁷ Research School of Physics, Australian National University, Canberra ACT, 2601, Australia.

PMID: 33949056
DOI: 10.1002/anie.202101188

Abstract

We suggest a new strategy for creating stimuli-responsive bio-integrated optical nanostructures based on Mie-resonant silicon nanoparticles covered by an ensemble of similarity negatively charged polyelectrolytes (heparin and sodium polystyrene sulfonate). The dynamic tuning of the nanostructures' optical response is due to light-induced heating of the nanoparticles and swelling of the polyelectrolyte shell. The resulting hydrophilic/hydrophobic transitions significantly change the shell thickness and reversible shift of the scattering spectra for individual nanoparticles up to 60 nm. Our findings bring novel opportunities for the application of smart nanomaterials in nanomedicine and bio-integrated nanophotonics.

Keywords: all-dielectric nanophotonics; polyelectrolyte assembly; silicon nanoparticles; stimuli-responsive structures.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Molecular Dynamics Simulation*
Nanostructures / chemistry*
Particle Size
Polymers / chemistry*
Silicon / chemistry
Temperature*

Substances

Polymers
Silicon